OK - maybe I'm being really dumb here.
I know what sort of stuff they make fake cum out of, but having just watched a cumshot compilation movie it beats me how they make it look as if the cum's actually shooting out of the guy's penis.
The shots must be fake because the cum shoots out for about 30 seconds, but I can't see any tubes or anything as the women are masturbating the guys. It all looks very real, but surely it can't be?
Do they use some kind of tube, and if so how do they hide it?
